Figure 1.

Kaplan-Meier curves of the proportion of diabetes-free participants stratified according to serum Ad level at baseline. The cumulative incidence rates of T2DM in individuals of the baseline Ad quartiles (highest, ≥9.6 μg/mL; second highest, 7.1 to 9.5 μg/mL; third highest, 5.3 to 7.0 μg/mL; lowest, ≤5.2 μg/mL) were 2.7%, 3.6%, 5.1%, and 6.7%, respectively. The cumulative incidence rate of subjects of the lowest Ad quartile was significantly higher than that of subjects of the highest and second highest Ad quartiles (P < 0.001 and P < 0.001, respectively).